Case for a portable computer



FIG. 1 is a front top perspective view of the design for a case for a portable computer in closed position;

FIG. 2 is a rear, bottom perspective view of the design in closed position;

FIG. 3 is a view as in FIG. 1, but in the open position; and,

FIG. 4 is a view of FIG. 3, showing the positioning of a computer therein, the computer being shown in dotted lines and not forming part of the claimed invention. 

The ornamental design for a case for a portable computer, as shown and described. 